Natural History of Geysers and other Thermal Springs--Iceland Geysers--History of _The Geyser_--The Strokr--Eruption of _the_ Geyser--Growth of _the_ Geyser--Mechanism of Geysers--Artificial Geysers--Life and Death of Geysers--Laugs--New Zealand Hot Springs--_Te Tarata_--Hot Springs of the Waikato--Origin of Mineral Springs--Chemistry of Mineral Springs 180 CHAPTER XV. Mr. Everts's Thirty-seven Days of Peril--Lost--Loss of Horse--Midnight Dangers--Starvation--Return to Lake--No Food in the Midst of Plenty--Bessie Lake--Thistle Roots--Hunted by a Lion--Storms--First Fire--Vain Efforts to find Food--Attempt to cross the Mountains--The Lost Shoe--Forest on Fire--Hallucination--Turned back--The Doctor--Physiological Transformations--Descending the River--Loss of Lens--Discovery and Rescue 199 CHAPTER XVI. Our National Park--The Yellowstone Reservation--Dr. Hayden's Report--Text of Act of Congress--Appointment of Hon. N. P. Langford Superintendent of Park 250 LIST OF ILLUSTRATIONS. GREAT GEYSER BASIN _Front_ HOT SPRINGS OF GARDNER'S RIVER 27 DIANA'S BATH, GARDNER'S RIVER 31 LIBERTY CAP, GARDNER'S RIVER 36 EXTINCT GEYSER, EAST FORK OF THE YELLOWSTONE 50 THE DEVIL'S HOOF 58 GETTING A SPECIMEN 72 THE DEVIL'S DEN 76 UPPER FALLS OF THE YELLOWSTONE 86 THE MUD VOLCANO 100 YELLOWSTONE LAKE 106 THE FIRST BOAT ON YELLOWSTONE LAKE 113 BREAKING THROUGH 122 THE GRAND GEYSER, FIREHOLE BASIN 144 THE GIANT GEYSER 153 FAN GEYSER, FIREHOLE BASIN 158 THE BEE-HIVE 161 GRAND CAÑON AND LOWER FALLS OF THE YELLOWSTONE 194 IMAGINARY COMPANIONS 236 THE GIANTESS, FIREHOLE BASIN 252 MAPS. HAYDEN'S GEOLOGICAL SURVEY OF YELLOWSTONE NATIONAL PARK. [Illustration] CHAPTER I. THE CROWN OF THE CONTINENT.